Frogs (Hyla spp.) or geckos (especially Hemidactylus spp.) will likely work. I have also had some luck with fish (sold as 'Roses' here in the U.S.). I DON'T put them in a water dish, but toss them near the animal in the evening. They flop around for 10-15 minutes before dying, and hopefully they grab one before then....

Best of luck,
Chris
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Christopher E. Smith
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